Hi all, I think there is a bug for io_size. For example, I want to write 16KB data to a file of size 8KB (so each block is written twice) and I have the following job file: [global] ioengine=sync rw=write bs=4kb size=8kb io_size=32kb [job1] write_iolog=iolog.1 After running, iolog.1 will contain the following contents: fio version 2 iolog job1.0.0 add job1.0.0 open job1.0.0 write 0 4096 job1.0.0 write 4096 4096 job1.0.0 close This shows that each block has been only written once. If I change the ioengine to libaio, iolog.1 will contain: fio version 2 iolog job1.0.0 add job1.0.0 open job1.0.0 write 0 4096 job1.0.0 write 4096 4096 job1.0.0 close job1.0.0 open job1.0.0 write 0 4096 job1.0.0 write 4096 4096 job1.0.0 close job1.0.0 open job1.0.0 write 0 4096 job1.0.0 write 4096 4096 job1.0.0 close job1.0.0 open job1.0.0 write 0 4096 job1.0.0 write 4096 4096 job1.0.0 close Bug or wrong usage? Thanks, Jun -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
